Issue 10, 2017

Facile synthesis of black phosphorus–Au nanocomposites for enhanced photothermal cancer therapy and surface-enhanced Raman scattering analysis

Abstract

Black phosphorus (BP), a new type of two-dimensional nanomaterial, has attracted crucial attention in recent years owing to its excellent properties and great potential in various chemical, physical, and biological fields. In this study, BP nanosheets loaded with Au nanoparticles (BP–Au NSs) are obtained by a one-step facile synthetic method. The Au nanostructures can not only enhance the photothermal efficiency of the nanocomposites, but also endow BP–Au NSs with the potential to act as effective surface-enhanced Raman scattering (SERS) substrates for Raman biodetection. Cancer photothermal therapy (PTT) has been carried out in vitro and in vivo using BP–Au NSs as nanoagents. Under irradiation by an 808 nm laser, BP–Au NSs are capable of producing sufficient hyperthermia to destroy cancer cells, and the transplanted tumors in most of the tumor-bearing mice disappeared; BP–Au NSs are more effective than bare BP nanosheets. The PTT effect can also be monitored by a Raman technique that benefits from the high SERS activity of the BP–Au NSs. The molecular fingerprint features of breast tumors before and after PTT treatment were clearly identified using SERS analysis. The theranostic applications of BP–Au NSs exhibit promising potential in biomedicine.

Graphical abstract: Facile synthesis of black phosphorus–Au nanocomposites for enhanced photothermal cancer therapy and surface-enhanced Raman scattering analysis

Supplementary files

Article information

Article type
Paper
Submitted
05 May 2017
Accepted
23 Jun 2017
First published
29 Jun 2017

Biomater. Sci., 2017,5, 2048-2055

Facile synthesis of black phosphorus–Au nanocomposites for enhanced photothermal cancer therapy and surface-enhanced Raman scattering analysis

G. Yang, Z. Liu, Y. Li, Y. Hou, X. Fei, C. Su, S. Wang, Z. Zhuang and Z. Guo, Biomater. Sci., 2017, 5, 2048 DOI: 10.1039/C7BM00414A

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